IDENTIFIERS

Current Taxon Name (Soil Name): Guanajibo

OSD

Series Extent

User Site ID: D02PR023002

User Pedon ID: D02PR023002

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - NSSL

Lab Pedon # - 03N0657

NCSS Pedon Lab Data NASIS Record ID - 15911

Print Date: 11/21/2024

LOCATION

Location In Web Soil Survey

AOI is roughly a square mile and pedon is marked in the center.

Location in SoilWeb

Location in Google Maps

Std. Latitude: 18.1286111

Std. Longitude: -67.1683333

Datum: WGS84

Location Description: Guanajibo sandy clay loam, 2 to 12 percent slopes; approximately 0.9 mile northwest from the intersection of PR Hwy. 100 and PR Hwy. 311; about 600 feet north from the road on naturalized pastureland; Cabo Rojo Municipality. (USGS Mayaguez topographic quadrangle (1966); lat. 18 degrees 07 minutes 43 seconds N. and long. 67 degrees 10 minutes 06 seconds W.)

Map Unit: GnC—Guanajibo sandy loam, 2 to 12 percent slopesGoC—Guanajibo loam, 2 to 12 percent slopesGhC—Guanajibo gravelly sandy clay loam, 2 to 12 percent slopes

Non-MLRA Soil Survey Area: PR684—Mayaguez Area, Puerto Rico Western PartPR787—San German Area, Southwestern Puerto Rico

PEDON

Describers Name: Jorge L. Lugo; Samuel Rios

Current Taxonomic Class: Very-fine, mixed, active, isohyperthermic Plinthic Kanhapludults

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 2

Correlated Information:

Soil Name - Guanajibo

PSC - 25 to 75 cm.

Classificaton Date - 2/27/2009

Soil Taxonomic Edition - tenth edition

Moisture Class - udic

Moisture Subclass - udic

Sampled As Information:

Soil Name - Guanajibo

Classificaton Date - 8/20/2002

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: clayey marine sediments

Landscape: coastal plain

Landform: terrace, alluvial fan

Geomorphic Component Terraces: tread

Hill Slope Profile: toeslope

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Drainage Pattern: dendritic

Runoff: low

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Geology: Tertiary member of the Quartz And Sand Deposits formation in the Tqs group.

Surface Fragments: 21.00 percent nonflat rounded 2- to 76-millimeter ironstone nodules,

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 8/20/2002 (actual site observation date)

Air Photo ID: 1B

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - tropical

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Current Weather - sunny

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
plinthite	weakly coherent	53 - 160	—

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
umbric epipedon argillic horizon plinthite	0—25 25—160 53—160	15—25—30 12—20—23 —-

Setting and Climate
Slope	Slope Length USLE	Upslope Length	Elev.	Corr. Elev	Aspect	MAP	REAP	FFD	MAAT	MSAT	MWAT	MAST	MSST	MWST	MFFP	PE Index	Climate Station ID	Climate Station Name	Climate Station Type
%	m				degrees	mm	mm		C						mm
8	—	—	13	—	300	1256	—	365	31.6	32.6	30.3	—	—	—	—	—	667492	Puerto Real	Weather (NOOA)

Ap—0 to 25 centimeters (0.0 to 9.8 inches); dark reddish brown (5YR 3/2) broken face gravelly sandy clay loam; 61 percent sand; 15 percent silt; 24 percent clay; moderate fine granular structure; friable, nonsticky, nonplastic; moderate permeability; 10.0 very fine roots throughout and 1.0 medium roots throughout and 10.0 fine roots throughout and 1.0 coarse roots throughout; 3.0 very fine irregular and 1.0 fine irregular pores; 21 percent by volume nonflat subrounded moderately coherent cemented 2-?-76 millimeter ironstone nodules fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 5.0, pH meter; abrupt wavy boundary.; moist when described; observed in cut

Bt—25 to 53 centimeters (9.8 to 20.9 inches); strong brown (7.5YR 5/8) broken face clay; 15 percent sand; 14 percent silt; 70 percent clay; moderate medium subangular blocky, and moderate fine subangular blocky structure; firm, slightly sticky, slightly plastic; moderate permeability; 3.0 fine roots throughout; 3.0 very fine irregular and 3.0 fine irregular pores; 10 percent faint clay films on all faces of peds; 10 percent medium distinct red (2.5YR 5/8), moist, masses of oxidized iron; 3 percent by volume nonflat subrounded moderately coherent cemented 2-20-76 millimeter ironstone nodules fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.8, pH meter; clear wavy boundary.; moist when described; observed in cut. continuous - phpvsfiid 352587; continuous - phpvsfiid 352587

Btv1—53 to 76 centimeters (20.9 to 29.9 inches); strong brown (7.5YR 5/6) broken face clay; 19 percent sand; 11 percent silt; 70 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; firm, slightly sticky, slightly plastic; moderate permeability; 1.0 fine roots throughout; 3.0 very fine irregular and 3.0 fine irregular pores; 10 percent faint clay films on surfaces along root channels and 10 percent faint clay films on all faces of peds; 5 percent plinthite nodules and 10 percent medium red (2.5YR 4/8), moist, masses of oxidized iron; 6 percent by volume nonflat subrounded moderately coherent cemented 2-20-76 millimeter ironstone nodules fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 5.0, pH meter; clear wavy boundary.; moist when described; observed in cut. continuous - phpvsfiid 352590; continuous - phpvsfiid 352591; continuous - phpvsfiid 352590; continuous - phpvsfiid 352591

Btv2—76 to 94 centimeters (29.9 to 37.0 inches); strong brown (7.5YR 5/6) broken face clay; 15 percent sand; 17 percent silt; 68 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; firm, slightly sticky, slightly plastic; moderate permeability; 1.0 fine roots throughout; 3.0 very fine irregular and 3.0 fine irregular pores; 10 percent faint clay films on surfaces along root channels and 10 percent faint clay films on all faces of peds; 10 percent plinthite nodules and 25 percent medium red (2.5YR 4/6), moist, masses of oxidized iron; 3 percent by volume nonflat subrounded moderately coherent cemented 2-20-76 millimeter ironstone nodules fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.2, pH meter; gradual irregular boundary.; moist when described; observed in cut. continuous - phpvsfiid 352594; continuous - phpvsfiid 352595; continuous - phpvsfiid 352594; continuous - phpvsfiid 352595

Btv3—94 to 160 centimeters (37.0 to 63.0 inches); variegated 20 percent light olive brown (2.5Y 5/6) broken face and 20 percent pale yellow (2.5Y 8/3) broken face and 20 percent dark red (2.5YR 3/6) broken face and 20 percent strong brown (7.5YR 4/6) broken face and 20 percent brown (10YR 4/3) broken face clay; 15 percent sand; 15 percent silt; 70 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; firm, slightly sticky, slightly plastic; moderate permeability; 1.0 fine roots throughout; 3.0 fine irregular pores; 10 percent faint clay films on all faces of peds; 25 percent plinthite nodules; 4 percent by volume nonflat subrounded moderately coherent cemented 2-20-76 millimeter ironstone nodules fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.5, pH meter.; moist when described; observed in cut. continuous - phpvsfiid 352596; continuous - phpvsfiid 352596